임플랜트 지대주의 삭제과정이 결합부 안정성에 미치는 영향
The effect of preparation procedure on implant-abutment joint stability
이장욱, 김창회, 장경수, 임영준,
소속 상세정보
이장욱 ( Lee Jang-Wook ) - 서울대학교 치과대학 치과보철학교실
김창회 ( Kim Chang-Whe ) - 서울대학교 치과대학 치과보철학교실
장경수 ( Jang Kyung-Soo ) - 서울대학교 치과대학 치과보철학교실
임영준 ( Lim Young-Jun ) - 서울대학교 치과대학 치과보철학교실
KMID : 0362420050430050662
Abstract
Statement of problem: Little is known about the effect of abutment preparation procedure on de-torque values in different implant platform and the relationship of final de-torque values with different implant platform size.
Purpose: This study evaluated the effect of abutment preparation procedure on de-torque values in different implant platform and the relationship of final de-torque values with different implant platform size.
Materials & Methods: Six ITI implants (2 narrow-neck implants, 2 regular-neck implants, 2 wide-neck implants) and six Bra.nemark implants (2 narrow platforms, 2 regular platforms, 2 wide platforms) were embedded in each acrylic resin block with epoxy resin. Eighteen synOcta(R) abutments (6 narrow-neck implant-abutments, 6 regular-neck implant-abutments, 6 wide-neck implant-abutments) and eighteen esthetic abutments (6 narrow platform-abutments, 6 regular platform-abutments, 6 wide platform-abutments) were tightened to each implant with digital torque gauge. Initial de-torque values were measured using digital torque gauge. After preparation of abutments, Final de-torque values were measured with digital torque gauge.
Results & Conclusion: 1. Screws loosening or abutments motion were not detected in all experimental group, but some scratches of implant-abutment joints were detected in all group. 2. Reduction ratios of final de-torque values were greater than initial de-torque values in all measured group, except in narrow-neck implant-abutment group (p<0.05). 3. Reduction ratios of final de-torque values in wide-neck implant-abutment group were greater than regular-neck implant-abutment group (p<0.01). 4. The greatest standard deviation value was detected in wide platform group in both implant systems.
키워드
Preparable abutment;Initial de-torque value;Final de-torque value;Screw loosening;joint stability
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